Toy vehicle

ABSTRACT

A toy vehicle which performs running control and steering control according to a signal from a radio controller, having a motor mounted on a front part of a chassis, for driving a front wheel.

BACKGROUND OF THE INVENTION

[0001] 1. Field of the Invention

[0002] The present invention relates a toy vehicle which performsrunning control and steering control according to a signal from a radiocontroller.

[0003] 2. Description of the Related Art

[0004] Earlier, a toy vehicle which performs running control andsteering control according to a signal from a radio controller has beenwell known. The toy vehicle drives rear wheels to run, and changes adirection of front wheels to perform steering by receiving a signal fromthe radio controller (see, for example, Japanese Patent ApplicationPublication (Unexamined) No. Tokukai-2002-166064).

[0005] A rear-wheel-drive vehicle raises a problem in operability.Specially, when running the toy vehicle on a floor face, the rear wheelsof the toy vehicle slips on the floor face, thereby making a controldifficult.

SUMMARY OF THE INVENTION

[0006] The present invention has been developed in view of solving theproblem, and an object of the present invention is to provide a toyvehicle with excellent operability.

[0007] In accordance with a first aspect of the invention, the toyvehicle which performs running control and steering control according toa signal from a radio controller, comprises:

[0008] a motor mounted on a front part of a chassis, for driving a frontwheel.

[0009] According to the toy vehicle, since the motor is mounted near thefront wheel for performing steering, it can provide an excellent roadholding by the weight of the motor. Moreover, since the toy vehicle isthe front-wheel-drive vehicle, the operability is improved.

[0010] Preferably, the motor is mounted adjacent to a front wheel axle.

[0011] A position for mounting the motor may be on the front side of thefront wheel axle or just behind the front wheel axle.

[0012] A steering method is not particularly limited, however, thesteering can be performed by a four-section rotational linkage. Adriving method for the four-section rotational linkage is not limited,however, the four-section rotational linkage can be driven by utilizinga repulsive force or an attraction force acting between a permanentmagnet (or a non-magnetized magnetic material) and a coil.

[0013] According to the toy vehicle, since the motor is mounted near thefront wheel axle, a power transmission mechanism becomes simple, therebymaking the toy vehicle compact.

[0014] Preferably, the motor is detachably mounted on the chassis.

[0015] In this case, it is preferable to prepare motors with differentproperties in revolution speed, torque or the like.

[0016] According to the toy vehicle, the motor can be replaced to thatwith the number of revolutions according to the course.

[0017] Preferably, the toy vehicle further comprises an intermediateshaft which comprises a first gear and a second gear which are engagedwith a third gear fixed on a motor shaft of the motor and a fourth gearfixed on the front wheel axle, respectively, and is detachably mountedon the chassis between the motor shaft and the front wheel axle.

[0018] According to the toy vehicle, since the intermediate shaft can bereplaced to that with gears having different number of teeth, the numberof revolutions of the wheel corresponding to the course can be obtained.

[0019] Preferably, one ends of right and left driven links are supportedby the chassis swingablly in a horizontal direction, a driving link iscrossed over between other ends of the right and left driven links, twospindles are swingablly supported by the right and left driven links,and each of the two spindles is connected to the front wheel axle.

[0020] Preferably, one ends of right and left driven links are supportedby the chassis swingablly in a horizontal direction, a driving link iscrossed over between other ends of the right and left driven links, twospindles are swingablly supported by the right and left driven links,each of the two spindles is connected to the front wheel axle through aflexible joint, the front wheel axle is supported by the two spindleswithout being supported by the chassis, and the flexible joint comprisesa spherical shaped part provided on one of the spindle and the frontwheel axle, and a cylindrical body provided on the other thereof, thespherical shaped part comprising protrusions at positions opposite toeach other across a center of an axis of the spherical shaped part,slits being formed in the cylindrical body at positions opposite to eachother across a center of an axis of the cylindrical body, the sphericalshaped part being engaged with the cylindrical body with the protrusionsfitting in the slits.

[0021] According to the toy vehicle, since the front wheel axle issupported by the two spindles without being supported by the chassis,the steering can be performed smoothly even when an axis shift of thefront wheel axle and each spindle occurs.

[0022] Preferably, one ends of right and left driven links are supportedby the chassis swingablly in a horizontal direction, a driving link iscrossed over between other ends of the right and left driven links, twospindles are swingablly supported by the right and left driven links,each of the two spindles is connected to the front wheel axle through aflexible joint, the front wheel axle is supported by the chassis, thefront wheel axle is supported by the two spindles, and the flexiblejoint comprises a cylindrical body provided on one of the spindle andthe front wheel axle, and an engaging part provided on the other thereofto protrude radially, end parts of the two spindles and the front wheelaxle fitting with each other, a slit for making the engaging part fittherein being formed in the cylindrical body, and the engaging partfitting in the slit.

[0023] According to the toy vehicle, since the ends of the spindles andthe front wheel axle are made to fit each other, the steering can beperformed smoothly.

[0024] Preferably, the driving link comprises a permanent magnet, andcoils provided at positions across the permanent magnet.

[0025] The driving link may comprise a coil, and permanent magnetsprovided at positions across the coil.

[0026] The driving link may comprise a non-magnetized magnetic material,and coils provided at positions across the non-magnetized magneticmaterial.

[0027] Preferably, a rear wheel is provided with a suspension structure.

[0028] According to the toy vehicle, since the road holding of the rearwheel is improved, the toy vehicle can run stably.

BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will become more fully understood from thedetailed description given hereinafter and the accompanying drawingswhich are given by way of illustration only, and thus are not intendedas a definition of the limits of the present invention, and wherein;

[0030]FIG. 1 is a perspective view showing a toy vehicle in the firstembodiment;

[0031]FIG. 2 is a schematic perspective view showing a state where abody is removed from the vehicle toy in FIG. 1;

[0032]FIGS. 3A and 3B are a perspective view explaining an attachingstructure for a cover body covering a lower side of a motor of thevehicle toy in FIG. 1;

[0033]FIG. 4 is a schematic plan view showing a power transmissionmechanism, a steering mechanism, and a suspension structure of the toyvehicle in FIG. 1;

[0034]FIG. 5 is a perspective view showing a flexible joint of the toyvehicle in FIG. 1;

[0035]FIG. 6 is a perspective view showing a link driving mechanism ofthe toy vehicle in FIG. 1;

[0036]FIG. 7 is a view showing a part of a coil driving circuit of thetoy vehicle in FIG. 1;

[0037]FIG. 8 is a view showing a circuitry of the toy vehicle in FIG. 1;

[0038]FIG. 9 is a plan view showing a power transmission mechanism, asteering mechanism, and a suspension structure of a toy vehicle of thesecond embodiment;

[0039]FIG. 10 is a plan view showing a power transmission mechanism, asteering mechanism, and a suspension structure of a toy vehicle of thethird embodiment;

[0040]FIG. 11 is a plan view showing a power transmission mechanism anda steering mechanism of a toy vehicle of the fourth embodiment;

[0041]FIG. 12 is a schematic cross sectional view showing a state ofattaching the power transmission mechanism and the steering mechanism inFIG. 11 to a chassis;

[0042]FIG. 13 is a perspective view showing a power transmissionmechanism and a steering mechanism of a toy vehicle of the fifthembodiment;

[0043]FIG. 14 is a schematic view showing a flexible joint in FIG. 13;and

[0044]FIG. 15 is a schematic cross sectional view showing a state ofattaching the power transmission mechanism and the steering mechanism inFIG. 13 to a chassis.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0045] Hereinafter, the preferred embodiments of the present inventionwill be described in detail by reference to the attached drawings.

[0046] [First Embodiment]

[0047]FIG. 1 is a perspective view showing an exterior of a toy vehicle1, and FIG. 2 is a schematic perspective view showing a state where abody 2 is removed.

[0048] The toy vehicle 1 is configured to move back and forth, and turnto the right or left according to control signals from a radiocontroller which is not shown. The configuration of the toy vehicle 1will be explained in detail below.

[0049] (Attaching Structure of Motor)

[0050] A motor M1 for driving front wheels 3 is disposed at a frontportion of a chassis 4, and a motor shaft 5 attached to the chassis 4extends in a width direction of the toy vehicle 1.

[0051] The motor M1 is attachable/detachable from the lower side of thechassis 4, and is covered at the lower side by a cover body 6 in a stateof being attached to the chassis 4 (refer to FIGS. 3A and 3B).

[0052] (Structure of Cover Body)

[0053] The cover body 6 attachable/detachable to the chassis 4 comprisesa bottom plate part 6 a for covering the lower side of the motor M1 anda standing part 6 b which stands from the bottom plate part 6 a as shownin FIG. 3A. The standing part 6 b is provided with a protrusion 7 on theinside thereof. Slits 9 are formed at both sides of the bottom platepart 6 a, and a claw 8 which projects to a lateral direction is formedat each tip of the outer portions formed by the slits 9. The claws 8 areadapted to be elastically deformable to the inside of the cover body 6.

[0054] A hole 4 b is formed in the end surface of the bottom plateportion of the chassis 4, and dents 4 d are formed on the inner surfaceof the hole 4 b.

[0055] A tip of the bottom plate part 6 a is inserted in the hole 4 b ofthe chassis 4 to engage the claws 8 at both sides of the bottom platepart 6 a with the dents 4 d, and the protrusion 7 inside of the standingpart 6 b is engaged with a hole 4 a in a front plate portion of thechassis 4, thereby attaching the cover body 6 to the chassis 4.

[0056] (Power Transmission Mechanism)

[0057] As shown in FIG. 4, a gear 10 is fixed on a motor shaft 5. Theintermediate shaft 11 is disposed to be in parallel with the motor shaft5, and is attachably/detachably engaged to the slit 4 c (refer to FIG.2) from upper side. A large diameter gear 12 engaged with the gear 10and a small diameter gear 13 are fixed on the intermediate shaft 11.

[0058] The front wheel axle 14 is disposed to be in parallel with theintermediate shaft 11, and a large diameter gear 15 engaged with thegear 13 is fixed on the front wheel axle 14. The front wheels 3 areconnected at the both sides of the front wheel axle 14 through flexiblejoints 16, respectively.

[0059] As shown in FIG. 5, each flexible joint 16 comprises acylindrical body 18 fixed on the front wheel axle 14, and a spindle 19which is fixed to the front wheel 3 at an outer end and has a sphericalshaped part 19 a at the inner end which is inserted to the cylindricalbody 18. In the cylindrical body 18, slits 18 a are formed at positionsopposite to each other across the center of an axis of the cylindricalbody 18. The spherical shaped part 19 a of the spindle 19 is providedwith protrusions 19 b which fit into the slits 18 a.

[0060] According to the power transmission mechanism of thisconfiguration, the power from the motor is transmitted to the frontwheels 13 through the gears 10 and 12, the intermediate shaft 11, thegears 13 and 15, the front wheel axle 14, the flexible joints 16 and thespindles 19.

[0061] (Steering Mechanism)

[0062] As shown in FIG. 4, the toy vehicle 1 comprises a driving link 21and a driven links 22 which forms a turning pair with the driving link21. These links form a four-section rotational linkage in which thechassis portion between the shafts 23, 23 of the right and left drivenlinks 22 acts as a fixed link. When the driven links 22 sway centeringaround the shafts 23 by the movement of the driving link 21, thedirection of the front wheels 3 supported by vertical plates 22 a (referto FIG. 2) is adapted to change in linking with the driven links 22.

[0063] As shown in FIG. 6, a holder 26 is disposed on the lower side ofthe central portion of the driving link 21, on which a permanent magnet24 is provided. The permanent magnet 24 is formed in a disk shape, andboth end surfaces thereof face in the right and left directions,respectively. One end surface of the permanent magnet 24 is a southpole, and the other one thereof is a north pole. The chassis 4 isprovided with coils 25, 25 at positions across the permanent magnet 24.One end parts of coils 25, 25 face the end surfaces of the permanentmagnet 24 provided on the driving link 21.

[0064] Each shaft 23 is positioned such that the shaft line of eachshaft 23 passes through the connecting part of the front wheel 14 andthe spindle 19, that is, the spherical shaped part 19 a. In other words,three shaft lines of the shaft 23, the front wheel 14 and the spindle 19intersect each other.

[0065]FIG. 7 shows a portion of the coil driving circuit. Energizationof the coil driving circuit is controlled by a control device. The coildriving circuit is configured to energize both of the right and leftcoils 25 at the same time. When both of the coils 25 are energized atthe same time, the polarities of the coils 25 on the sides which facethe end surfaces of the permanent magnet 24 become homopolar (north poleor south pole). Accordingly, when the right and left coils 25 areenergized, attractive force is generated between one coil 25 and thepermanent magnet 24, and repulsive force is generated between the othercoil 25 and the permanent magnet 24. Therefore, the driving link 21 andthus the driven links 22, 22 sway centering around the shaft 23, therebychanging the direction of the front wheels 3.

[0066] Suspension Structure of Rear Wheel)

[0067] A rear wheel axle 35 of right and left rear wheels 34 shown inFIG. 4 is covered by an axle cover 30. The axle cover 30 is providedwith a shaft 31 which extends in the back and forth directions of thetoy vehicle 1, and the shaft 31 is supported by the chassis 4. Thus, theright and left rear wheels 34 perform seesaw movement centering on theshaft 31. The axle cover 30 is provided with projected pieces 32, 32,each of which is provided with a coil spring 33 at a tip thereof. Thecoil springs 33, 33 are adapted to contact with the bottom plate portionof the chassis 4 from the lower side, thereby absorbing the up and downmovement of the toy vehicle 1.

[0068] (Circuit Structure)

[0069] As shown in FIG. 8, the control signals from the radio controllerare received by an antenna (not shown) to perform demodulation or thelike by a processing section 40. A control device 42 controls a coildriving circuit 44 and a motor driving circuit 45, and thus the motor M1and the coils 25 according to operation program stored in a storingsection 41. These circuit elements are mounted on a circuit board 43(refer to FIG. 2).

[0070] (Other Structure)

[0071] The circuit board 43 is provided with a battery storage space(not shown) at the lower side thereof, in which a battery can bemounted.

[0072] (Operation and Effect of Toy Vehicle in the Embodiment)

[0073] Since the motor M1 is disposed near the front wheels 3 forperforming steering, the road holding of the front wheels 3 is improvedby the weight of the motor M1. Moreover, since the toy vehicle 1 is thefront-wheel-drive vehicle, the operability is improved.

[0074] Since the motor M1 can be replaced according to the course, itcan realize broad options for playing, thereby increasing interest inplaying.

[0075] The suspension structure is provided on the rear wheels 34 side,so that the road holding of the rear wheels 34 is improved, therebyrealizing stable running.

[0076] [Second Embodiment]

[0077]FIG. 9 shows a power transmission mechanism, a steering mechanismand a suspension structure of a toy vehicle in the second embodiment. Inthis embodiment, the power transmission mechanism and the suspensionstructure of the toy vehicle are different from those in the firstembodiment. Other structures are similar to those of the toy vehicle 1in the first embodiment, thus the explanation thereof is omitted here.

[0078] (Power Transmission Mechanism)

[0079] In the power transmission mechanism in this embodiment, the gears12 and 13 of the toy vehicle 1 in the first embodiment are united.

[0080] (Suspension Structure)

[0081] A shaft 51 is rotatably supported by the chassis 4. Cylindershafts 53, 53 are rotatably engaged with end portions of both sides ofthe shaft 51, respectively. One ends of swaying arms 52, 52 which extendtoward backward are supported at outer end sides of the cylinder shafts53, 53, respectively. The other ends of the swaying arms 52, 52 supportrear wheel axles 50, 50, respectively. The right and left rear wheels34, 34 are rotatably supported by the rear wheel axles 50, 50,respectively. A projected piece 54 which extends toward backward isprovided at each inner end side of the cylinder shafts 53, 53. A spring55 is provided at each tip part of the projected pieces 54, 54. Thesprings 55, 55 are adapted to contact with the bottom plate portion ofthe chassis 4 from the lower side.

[0082] As described above, the toy vehicle is configured such that theswaying arms 52 on right and left sides are individually movable up anddown, thereby absorbing the up and down movement of each wheel 34, 34individually.

[0083] [Third Embodiment]

[0084]FIG. 10 shows a power transmission mechanism, steering mechanismand suspension structure of a toy vehicle in the third embodiment. Inthis embodiment, the power transmission mechanism of the toy vehicle isdifferent from that in the first embodiment. Other structures aresimilar to those of the toy vehicle 1 in the first embodiment, thus theexplanation thereof is omitted here.

[0085] (Power Transmission Mechanism)

[0086] As shown in FIG. 10, a gear 60 is fixed on the motor shaft 5. Theintermediate shaft 11 is disposed to be in parallel with the motor shaft5, and a large diameter gear 61 is fixed on the intermediate shaft 11.The gears 60 and 61 are engaged with each other.

[0087] A small diameter gear 62 is also fixed on the intermediate shaft11 integrally with the gear 61. The gear 62 is engaged with a gear 63 bfixed on one spindle 64.

[0088] A gear 65 having the same diameter and the same number of teethas those of the gear 62 is fixed on the intermediate shaft 11. The gear65 is engaged with a gear 66 fixed on the other spindle 64.

[0089] According to the power transmission mechanism, the power from themotor is transmitted to one front wheel 3 through the gears 60, 61, 62,63 and the spindle 64, and also transmitted to the other front wheel 3through the gears 60, 61, the intermediate shaft 11, the gears 65, 66and the spindle 64.

[0090] In the toy vehicle 1, the shafts 23, 23 of the right and leftdriven links 22, 22 are positioned such that the shaft lines of theshafts 23, 23 pass through engaged portions of the gears 62 and 63, andthe gears 65 and 66, respectively. Even when the right and left drivenlinks 22, 22 sway, the engagements of the gears 62 and 63, and the gears65 and 66 are not released. This configuration does not need theflexible joint 16.

[0091] [Fourth Embodiment]

[0092]FIG. 11 shows a power transmission mechanism and a steeringmechanism of a toy vehicle in the fourth embodiment. In this embodiment,the power transmission mechanism and the steering mechanism of the toyvehicle are different from those in the first embodiment. Otherstructures are similar to those of the toy vehicle 1 in the firstembodiment, thus the explanation thereof is omitted here.

[0093] (Power Transmission Mechanism)

[0094] In this power transmission mechanism, an intermediate shaft isomitted, and the large diameter gear 15 is positioned at the end part ofthe front wheel axle 14. Moreover, the gear 15 is engaged with the gear10 of the motor shaft 5 which is not shown, and the cylindrical body 18of one flexible joint 16 is disposed to be unified with the largediameter gear 15.

[0095] (Steering Mechanism)

[0096] In this steering mechanism, the holder 26 is disposed between theright and left driven links 22, and as shown in FIG. 12, the shafts 23of the driven links 22 are supported by the chassis 4.

[0097] In this embodiment, since the intermediate shaft is omitted, themotor M1 can be disposed near the front wheel axle 14. Moreover, thelarge diameter gear 15 can be disposed on one side in the widthdirection of the toy vehicle, so that the motor M can be disposed in aspace formed between the right and left driven links 22 to face theholder 26.

[0098] In this embodiment, the front wheel axle 14 is supported only bythe spindles 19 on which the front wheels 3 are fixed. Thus, when theright and left driven links 22 sway, the spindles 19 easily follow themovement. Therefore, the steering can be performed smoothly even whenaxis shift occurs.

[0099] It is required that the engagement of the gears 15 and 10 are notreleased even when the front wheel axle 14 slightly moves by themovement of the spindles 19 which follows the movement of the right andleft driven links 22.

[0100] [Fifth Embodiment]

[0101]FIG. 13 shows a power transmission mechanism and a steeringmechanism of a toy vehicle in the fifth embodiment. In this embodiment,the power transmission mechanism of the toy vehicle is different fromthat in the forth embodiment. Other structures are similar to those ofthe toy vehicle 1 in the fourth embodiment, thus the explanation thereofis omitted here.

[0102] (Power Transmission Mechanism)

[0103] In this power transmission mechanism, the flexible joint 16 isconfigured such that the end part of the spindle 19 is bent at a rightangle, or a pin is fixed at a right angle on the shaft to form aprotrusion 19 c as shown in FIG. 14, and the protrusion 19 c fits in theslit 18 c of the cylindrical body 18 fixed on the end part of the axle14. The diameter of the spindle 19 is smaller than the inner diameter ofthe cylindrical body 18, and the axis of the spindle 19 is fit into thecylindrical body 18.

[0104] As shown in FIG. 15, this power transmission mechanism isconfigured such that the front wheel axle 14 and the shafts 23 of thedriven links 22 are supported by the chassis 4.

[0105] In this embodiment, the flexible joint 16 can be simple instructure.

[0106] In the flexible joint 16, another protrusion 19 c may be providedon the opposite side of the protrusion 19 c on the spindle 19, and alsoanother slit 18 may be formed in the cylindrical body 18 at positionopposite to the slit 18 across an axis center to make the anotherprotrusion 19 c fit therein.

[0107] In this embodiment, each end part of the spindles 19 is fit intothe cylindrical body 18 of the front wheel axle 14 while the front wheelaxle 14 is supported by the chassis 4. Thus, when the right and leftdriven links 22 sway, the spindles 19 easily follow the movementthereof. Therefore, the steering can be performed smoothly.

[0108] [Modification of the Present Invention]

[0109] For example, in the embodiments above described, the permanentmagnet 24 is provided on the driving link 21, and the coils 25 areprovided at both sides thereof. However, on the contrary, the coil 25may be provided on the driving link 21, and the permanent magnets 24 maybe provided at both sides thereof. Also, a magnetic material which isnot magnetized may be provided instead of the permanent magnet 24. Thatis, any structure may be employed if the driving link 21 is swayed by anelectromagnetic force.

[0110] A return spring may be provided for making the driving link 21keep a neutral position in right and left directions.

[0111] The entire disclosure of Japanese Patent

[0112] Applications No. Tokugan 2003-037182 which was filed on Feb. 14,2003, and No. Tokugan 2003-338576 which was filed on Sep. 29, 2003,including specification, claims, drawings and summary are incorporatedherein by reference in its entirety.

What is claimed is:
 1. A toy vehicle which performs running control andsteering control according to a signal from a radio controller,comprising: a motor mounted on a front part of a chassis, for driving afront wheel.
 2. The toy vehicle as claimed in claim 1, wherein the motoris mounted adjacent to a front wheel axle.
 3. The toy vehicle as claimedin claim 1, wherein the motor is detachably mounted on the chassis. 4.The toy vehicle as claimed in claim 2, wherein the motor is detachablymounted on the chassis.
 5. The toy vehicle as claimed in claim 3,further comprising an intermediate shaft which comprises a first gearand a second gear which are engaged with a third gear fixed on a motorshaft of the motor and a fourth gear fixed on the front wheel axle,respectively, and is detachably mounted on the chassis between the motorshaft and the front wheel axle.
 6. The toy vehicle as claimed in claim4, further comprising an intermediate shaft which comprises a first gearand a second gear which are engaged with a third gear fixed on a motorshaft of the motor and a fourth gear fixed on the front wheel axle,respectively, and is detachably mounted on the chassis between the motorshaft and the front wheel axle.
 7. The toy vehicle as claimed in claim1, wherein one ends of right and left driven links are supported by thechassis swingablly in a horizontal direction, a driving link is crossedover between other ends of the right and left driven links, two spindlesare swingablly supported by the right and left driven links, and each ofthe two spindles is connected to the front wheel axle.
 8. The toyvehicle as claimed in claim 1, wherein one ends of right and left drivenlinks are supported by the chassis swingablly in a horizontal direction,a driving link is crossed over between other ends of the right and leftdriven links, two spindles are swingablly supported by the right andleft driven links, each of the two spindles is connected to the frontwheel axle through a flexible joint, the front wheel axle is supportedby the two spindles without being supported by the chassis, and theflexible joint comprises a spherical shaped part provided on one of thespindle and the front wheel axle, and a cylindrical body provided on theother thereof, the spherical shaped part comprising protrusions atpositions opposite to each other across a center of an axis of thespherical shaped part, slits being formed in the cylindrical body atpositions opposite to each other across a center of an axis of thecylindrical body, the spherical shaped part being engaged with thecylindrical body with the protrusions fitting in the slits.
 9. The toyvehicle as claimed in claim 1, wherein one ends of right and left drivenlinks are supported by the chassis swingablly in a horizontal direction,a driving link is crossed over between other ends of the right and leftdriven links, two spindles are swingablly supported by the right andleft driven links, each of the two spindles is connected to the frontwheel axle through a flexible joint, the front wheel axle is supportedby the chassis, the front wheel axle is supported by the two spindles,and the flexible joint comprises a cylindrical body provided on one ofthe spindle and the front wheel axle, and an engaging part provided onthe other thereof to protrude radially, end parts of the two spindlesand the front wheel axle fitting with each other, a slit for making theengaging part fit therein being formed in the cylindrical body, and theengaging part fitting in the slit.
 10. The toy vehicle as claimed inclaim 7, wherein the driving link comprises a permanent magnet, andcoils provided at positions across the permanent magnet.
 11. The toyvehicle as claimed in claim 8, wherein the driving link comprises apermanent magnet, and coils provided at positions across the permanentmagnet.
 12. The toy vehicle as claimed in claim 9, wherein the drivinglink comprises a permanent magnet, and coils provided at positionsacross the permanent magnet.
 13. The toy vehicle as claimed in claim 7,wherein the driving link comprises a coil, and permanent magnetsprovided at positions across the coil.
 14. The toy vehicle as claimed inclaim 8, wherein the driving link comprises a coil, and permanentmagnets provided at positions across the coil.
 15. The toy vehicle asclaimed in claim 9, wherein the driving link comprises a coil, andpermanent magnets provided at positions across the coil.
 16. The toyvehicle as claimed in claim 7, wherein the driving link comprises anon-magnetized magnetic material, and coils provided at positions acrossthe non-magnetized magnetic material.
 17. The toy vehicle as claimed inclaim 8, wherein the driving link comprises a non-magnetized magneticmaterial, and coils provided at positions across the non-magnetizedmagnetic material.
 18. The toy vehicle as claimed in claim 9, whereinthe driving link comprises a non-magnetized magnetic material, and coilsprovided at positions across the non-magnetized magnetic material. 19.The toy vehicle as claimed in claim 1, wherein a rear wheel is providedwith a suspension structure.